More answers

they will look like
(y + a)(y + b)
where the product AB will = -12 and a + b will equal -1

welshfella

2 years ago

can you think of 2 numbers whose product is -12?

anonymous

2 years ago

3 and 4

welshfella

2 years ago

3nearl right 3 * 4 = 12 but we want -12

anonymous

2 years ago

-4 and 3

welshfella

2 years ago

* nearly

welshfella

2 years ago

ok that might be the ones we want
do they add up to -1?

anonymous

2 years ago

yeah is it the second optiion

welshfella

2 years ago

we haven't got that far yet we need to factor the denominator next.
yes a = 3 and b = -4
so the factors of the top of the fraction are
(x + 3)(x - 4)
now can you factor the denominator by the same method?

anonymous

2 years ago

3 and 5

anonymous

2 years ago

its the second option

welshfella

2 years ago

right
so we have
(y + 3)(y - 4)
----------
(y + 3)(y + 5)
y + 3 is common